charts
Horizontal Bar Chart Example
Example:
/// Horizontal bar chart example
import 'package:charts_flutter/flutter.dart' as charts;
import 'package:flutter/material.dart';
class HorizontalBarChart extends StatelessWidget {
final List<charts.Series> seriesList;
final bool animate;
HorizontalBarChart(this.seriesList, {this.animate});
/// Creates a [BarChart] with sample data and no transition.
factory HorizontalBarChart.withSampleData() {
return new HorizontalBarChart(
_createSampleData(),
// Disable animations for image tests.
animate: false,
);
}
@override
Widget build(BuildContext context) {
// For horizontal bar charts, set the [vertical] flag to false.
return new charts.BarChart(
seriesList,
animate: animate,
vertical: false,
);
}
/// Create one series with sample hard coded data.
static List<charts.Series<OrdinalSales, String>> _createSampleData() {
final data = [
new OrdinalSales('2014', 5),
new OrdinalSales('2015', 25),
new OrdinalSales('2016', 100),
new OrdinalSales('2017', 75),
];
return [
new charts.Series<OrdinalSales, String>(
id: 'Sales',
domainFn: (OrdinalSales sales, _) => sales.year,
measureFn: (OrdinalSales sales, _) => sales.sales,
data: data,
)
];
}
}
/// Sample ordinal data type.
class OrdinalSales {
final String year;
final int sales;
OrdinalSales(this.year, this.sales);
}